Encoxada In Bus Top -

So the user is talking about using the elbow in bus top positions in wrestling or Brazilian Jiu-Jitsu (BJJ). Bus top is a term I'm less familiar with. Wait, maybe they meant "top position" in the bus, like being on top in a mount position? Or maybe "bus top" is a term from a specific community or app? Hmm, that's unclear. Alternatively, could "bus top" be a typo for "back control" or another grappling position?